I also have big lift cam. I'm pretty sure I've discussed it with you on Facebook, my real name is Reynald.
What year is the 5M pulley, I'm thinking it is important.
Cross reference brang me there:
08/1981-11/1985 TOYOTA CELICA AA63,TA60,SA63,RA6*,MA61 13-04: TIMING BELT
08/1984-07/1988 TOYOTA...